65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_PROXY_INPUT_STREAM_HXX
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#define MPD_PROXY_INPUT_STREAM_HXX
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#include "InputStream.hxx"
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struct Tag;
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/**
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* An #InputStream that forwards all methods call to another
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* #InputStream instance. This can be used as a base class to
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* override selected methods.
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*/
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class ProxyInputStream : public InputStream {
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protected:
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InputStream &input;
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public:
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gcc_nonnull_all
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ProxyInputStream(InputStream *_input);
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virtual ~ProxyInputStream();
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ProxyInputStream(const ProxyInputStream &) = delete;
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ProxyInputStream &operator=(const ProxyInputStream &) = delete;
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/* virtual methods from InputStream */
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bool Check(Error &error) override;
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void Update() override;
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bool Seek(offset_type new_offset, int whence, Error &error) override;
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bool IsEOF() override;
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Tag *ReadTag() override;
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bool IsAvailable() override;
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size_t Read(void *ptr, size_t read_size, Error &error) override;
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protected:
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/**
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* Copy public attributes from the underlying input stream to the
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* "rewind" input stream. This function is called when a method of
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* the underlying stream has returned, which may have modified these
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* attributes.
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*/
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void CopyAttributes();
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};
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#endif
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